<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
  <form action="http://www.tmooc.cn">
  用户名:<input type="text" name="username" placeholder="请输入用户名"
  value="aaa" readonly="readonly"><br>
  密码:<input type="password" name="password"><br>
  性别:<input type="radio" name="gender" value="m" checked="checked" id="nan">男
  <input type="radio" name="gender" value="w">女<br>
  兴趣:<input type="checkbox" name="hobby" value="cy" checked="checked">抽烟
  <input type="checkbox" name="hobby" value="hj">喝酒
  <input type="checkbox" name="hobby" value="tt">烫头<br>
  生日:<input type="date" name="brithday"><br>
  靓照:<input type="file" name="pic"><br>
  所在城市:<select name="city">
  <option>请选择</option>
  <option value="bj">北京</option>
  <option selected="selected" value="sh">上海</option>
  <option value="xg">香港</option>
  <option value="yq">乐清</option>
  </select><br>
  <input type="reset">
  <input type="submit" value="注册">
  </form>
</body>
</html>